Siruping-off pan



Nov. l, 1927. 1,647,908

J. c. Fox

SIRUPING-OFF PAN Filed Sept. 16.` 1926 Z WITNESSES I f" 2f z 93. .7,

INVENTOR, JbHMCZF-ar.

ATTORNEYS Patented Nov. 1, 1927.

YUhllTED it/T Jorrit c. non, or nitrite-nn vnnvronr.

smarrito-ors ran.

Application filed September 16, 1926.

pans being such that they communicate with each other to permit the regulation oit iiow ot sap through the pans reversibly, or 1n other words alternately in opposite direc` tions so as to remove malate ot lime, sometimes called sugar' sand deposited on wall portions et the pans in the production ot the maple Sirup. lt has been 'found that when the sap is allowed to iiow through the pans olf an evaporator, malate ot lime in the sap is deposited on the walls ot the 'pan from which the Sirup is drawn, due to the tact that in the boilingl oi the sap and as it thickens in the production of the Sirup, the said malate ot linie adheres to the walls which must be removed in order to produce a superior grade ot maple sirup of the .proper color and flavor. It has been found that by reversing the flow of sap atter each days use ot the evaporator, the i'resh cold sap due to its comparatively great iluidity will remove the deposited malate oit' linie in passing through the pans in a reverse direction from that in which it was permitted to flow the dayy before. It is therefore the principal object ot the present invention to provide a siruping-otl means by virtue of which malate ot lime will be eliminated by the very act of reversibly introducing sap into and withdrawing` the sirnp trom the boiling pans ot an evaporator.

Another object ot the invention is the provision ot a siruping-olip pan ot special construction which may be arranged between other boilingl or evaporator pans which will cause the sap to flow in a proper manner tor obtaining the mentioned results loolred tor.

The nature of the invention and its distinguishing` features and advantages will appear when the following specitication is read in connection with the accompanying drawing, in which- Figure 1 is a plan view ot' several pans including the pan of the present invention which is arranged between two pans of well Serial No. 135,855.

known construction, portion of each ot the latter pans being shown.

Fig. 2 is a. perspective view oi' the pan ot the present invention.

Referring now to Fig. 1 ot the drawing, it will be apparent that there' is illustrated a pan 1() which embodies the present inven tion and pans 11 and 12. The pans 10, 11 and 12 are in communication with each other by means to be hereinafter described so that the sap may tlow through all o t` ,the pans in the production oi the maple sirup and sugar.

Referring now more particularly to the pan 10 it will be apparent that the same consists ot' a pan body 13 having` sides 14, ends 15 and a bottom 16. The pan body 10 is divided into two compartments 17 by virtue ot a longitudinal partition or dividing wall 18 which is arranged centrally 'of the pan body and has the opposite ends thereof connected respectivelyT to the ends 15, and is also connected to the bottom 16. EachV ot the compartments 17 has an arrangement of longitudinal walls 19 and 20 arranged in spaced relationship, and a transverse wall 21 extending trom one end of the wall19 to the related side wall 14 ot the pan body. Each ot the walls 19 and 2O is less than the distance between the end Walls 15. and each of the walls 19 and 20 is out otl' as at. Each wall Q0 is cut'otll adjacent its related transverse wall 21. whereas each wall 19 is cut oilQ adjacent the related end wall 15 ot the pan body. The arrangement ot all ot the wallsincluding the sides, ends and bottom ot the pan 13 is such as to provide atort-uous passageway in each ot the compartments 17. Said passageway in each ot' the conipartment-s 17 consists of branches 23. 24. Q5 and Q6. Each of the sides 14 o1 the pan body has connected thereto near the opposite ends thereof respectively cups 27 which communicate with the related compertinent 17, and therefore the tortuous passageway termed therein` by virtue of openings 28 in the related side 141.

The. pan 11 hereinbetore referred to is of well known tinted or corrugated construction, and a detailed description of the saine is not necessary except that it is to be understood that the pan 11 includes cups 29 which are similar to the cups Q7. The pan 12 hereinbetore referred to is also oit well known tinted or corrugated construction and also includes cups 30 similar to the cups 2T.

llU

The cups 27, 29 and 30 are connected together in pairs as shown most clearly in Fig. 1 by a suitable pipe connection 31, certain or all of which may be provided with a suitable eut-off valve 32.

The pan is the 'Siruping-off pan, soealled, because the sirup produced from the fresh sap is continuously drawn olf from one side or the other of the pan. In the product tion of the Sirup, the flow of the fresh sap and the resulting sirup is continuous. The pans 11 and 12 are mainly relied on, because of their greater heating surfaces, produced by the usual flutings or corrugations, for heating the sap to produce the Sirup. bince the Sirup produced is much thicker in consistency than the fresh sap, and because the comparatively thick Sirup is drawn olf from the pan 10, the deposits or accumulations on the Walls and partitions of pan 10 will be greatest at the end of the day. The pan 10 with its fiat bottom and arrangement of Walls and partitions,vwill cause a restricted and therefore an accelerated flow. Then the fresh sap is first introduced this restricted and accelerated flow will cause a cleaning action on the Walls and partitions of pan 1() causingdeposits or accumulations thereon to vbe removed. It is to be understood that either one of the cups 27 of the pan 10 may bek used for introducing the fresh sap, and for drawing off the resulting sirup.` It is also to be understood that the Several pans 10, llfand 12 will be subjected to substantially the -Same uniform intensity of heat.

From the foregoing it will be apparent that if sap is i'ntroduced'in one of the cups 29 of the pan 11, for instance, the cup designated A, withthe related valve 32 closed and through the passageway formed in the other compartment 17, and finally out through the cup designated B, as indicated by the arrows. The following day the sap may be introduced through the cup designatedk C,.and the resulting sirup will be drawn off from the cup designated D, there fore reversing the flow, which will result in the removal of the malate of lime deposited by virtue of the action of the comparatively restricted and accelerated flow of the fresh sap on the walls which will be thickest on those walls first encountered by the fresh sap. In this way the malate of lime is removed from the walls and is carried off in the sirup produced from which it may be readily removed in the form of sediment. It will therefore be understood that the walls of the Apan from which. the produced sirup is drawn oli" will be kept clean, and will not require the removal of the pan, as is now the oase, for scraping or having applied thereto certain acids for the removal of the malate of lime.

I claim:

1. In siruping-oif apparatus, several evaporator pans arranged end to end, one of said pans being the siruping-off pan and arranged between the other pans, the sirupinffoff pan including walls dividing the pan into two Separate compartments, and each compartment having a tortuous passage; and means establishing communication between the opposite ends of each tortuous passage and the interiors of the other pans respectively. f

2. A siruping-off pan consisting of a fiat bottom, side and end walls, a central partition wall extending between Said end walls and dividing the pan into two Separate compartments, and a tortuous passage formed in each of saidcompartments, the opposite ends of the tortuous passage in each compartment respectively opening through the opposite ends of the related side wall of the pan.

JOHN CRARY FOX. 

